/Engine/Plugins/Experimental/RenderGrid/Source/RenderGrid/Public/RenderGrid/RenderGrid.h
In here, you could for example obtain jobs from an external source and replace the current jobs of this render grid asset with those.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintImplementableEvent, Meta=(DisplayName="BeginEditor")) void ReceiveBeginEditor()